Ubuntu – My Dash does not show recent applications. What can I do to fix that

unityunity-dashzeitgeist

For some unknown reason, my Unity dash doesn't show recent applications. I am guessing it could be related to the fact that I have a newer version of zeitgeist than the standard repo provides (I use a ppa).

That is the only unusual detail I can think of. What can I do to get back recent applications in the dash?

The solution was to reinstall unity-lens-applications and unity-lens-files packages and the Dash magically works.
Both these packages were formely named unity-place-applications and unity-place-files